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https://hdl.handle.net/11147/6380
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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Sevinçli, Haldun | - |
dc.date.accessioned | 2017-10-18T13:17:40Z | |
dc.date.available | 2017-10-18T13:17:40Z | |
dc.date.issued | 2017-04 | |
dc.identifier.citation | Sevinçli, H. (2017). Quartic dispersion, strong singularity, magnetic instability, and unique thermoelectric properties in two-dimensional hexagonal lattices of group-VA elements. Nano Letters, 17(4), 2589-2595. doi:10.1021/acs.nanolett.7b00366 | en_US |
dc.identifier.issn | 1530-6984 | |
dc.identifier.issn | 1530-6984 | - |
dc.identifier.issn | 1530-6992 | - |
dc.identifier.uri | http://doi.org/10.1021/acs.nanolett.7b00366 | |
dc.identifier.uri | http://hdl.handle.net/11147/6380 | |
dc.description.abstract | The critical points and the corresponding singularities in the density of states of crystals were first classified by Van Hove with respect to their dimensionality and energy-momentum dispersions. Here, different from saddle-point Van Hove singularities, the occurrence of a continuum of critical points, which give rise to strong singularities in two-dimensional elemental hexagonal lattices, is shown using a minimal tight-binding formalism. The model predicts quartic energy-momentum dispersions despite quadratic or linear ones, which is also the origin of the strong singularity. Starting with this model and using first-principles density functional theory calculations, a family of novel two-dimensional materials that actually display such singularities are identified and their extraordinary features are investigated. The strong singularity gives rise to ferromagnetic instability with an inverse-square-root temperature dependence and the quartic dispersion is responsible for a steplike transmission spectrum, which is a characteristic feature of one-dimensional systems. Because of the abrupt change in transmission at the band edge, these materials have temperature-independent thermopower and enhanced thermoelectric efficiencies. Nitrogene has exceptionally high thermoelectric efficiencies at temperatures down to 50 K, which could make low-temperature thermoelectric applications possible. | en_US |
dc.description.sponsorship | TUBITAK (113C032 -- 115F445 -- 115F408); Izmir Institute of Technology (BAP-2015-IYTE-36); BAGEP program of the Science Academy, Turkey | en_US |
dc.language.iso | en | en_US |
dc.publisher | American Chemical Society | en_US |
dc.relation | info:eu-repo/grantAgreement/TUBITAK/BIDEB/113C032 | en_US |
dc.relation | info:eu-repo/grantAgreement/TUBITAK/MFAG/115F445 | en_US |
dc.relation | info:eu-repo/grantAgreement/TUBITAK/MFAG/115F408 | en_US |
dc.relation.ispartof | Nano Letters | en_US |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | Magnetic instability | en_US |
dc.subject | Quartic dispersion | en_US |
dc.subject | Thermoelectricity | en_US |
dc.subject | Van Hove singularity | en_US |
dc.subject | Two-dimensional materials | en_US |
dc.title | Quartic dispersion, strong singularity, magnetic instability, and unique thermoelectric properties in two-dimensional hexagonal lattices of group-VA elements | en_US |
dc.type | Article | en_US |
dc.authorid | TR21371 | en_US |
dc.institutionauthor | Sevinçli, Haldun | - |
dc.department | Izmir Institute of Technology. Materials Science and Engineering | en_US |
dc.identifier.volume | 17 | en_US |
dc.identifier.issue | 4 | en_US |
dc.identifier.startpage | 2589 | en_US |
dc.identifier.endpage | 2595 | en_US |
dc.identifier.wos | WOS:000399354500070 | en_US |
dc.identifier.scopus | 2-s2.0-85017428412 | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
dc.identifier.doi | 10.1021/acs.nanolett.7b00366 | - |
dc.identifier.pmid | 28318269 | en_US |
dc.relation.doi | 10.1021/acs.nanolett.7b00366 | en_US |
dc.coverage.doi | 10.1021/acs.nanolett.7b00366 | en_US |
dc.identifier.scopusquality | Q1 | - |
item.cerifentitytype | Publications | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | 03.09. Department of Materials Science and Engineering | - |
Appears in Collections: | Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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